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The singer’s rep confirmed that she had surgery to remove her gallbladder in L.A. this week after suffering from flu-like symptoms. Pink’s health issues not only forced her to cancel her appearance at an Obama fundraiser this week—Darren Criss filled in– but she was stuck in the hospital for her daughter, Willow Sage’s first birthday on June 3.

No surprise really, but the mom wasn’t too happy, leading her to tweet this: